Home / 643.06-964.52-210.18

Finding the Fourth Proportional to 643.06, 964.52 and 210.18

Calculator

Solution

The fourth proportional to 643.06, 964.52 and 210.18 is: 315.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    643.06 : 964.52 = 210.18 : x
  2. Step 2: Convert to fraction form
    643.06/964.52 = 210.18/x
  3. Step 3: Cross multiply
    643.06x = 964.52 × 210.18
  4. Step 4: Simplify right side
    643.06x = 202,722.81
  5. Step 5: Solve for x
    x = 202,722.81/643.06
  6. Step 6: Final answer
    x = 315.25

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.